Work feed mechanism



Oct. 4, 1932. c. CHRlSTlANSEN WORK FEED MECHANISM Filed July 11, 1930 3Sheets-Sheet l Inne /r4501".- 2t a I Q w v QNN MA AM 1 M NW .m r. N M yNNN QQN NN SN H WSW S NQH WM, .wm Q

Oct. 4, 1932. c. CHRISTIANSEN 1,830,803

WORK FEED MECHANISM Filed July 11, 1930 5 Sheets-Sheet 2 n z. m K w QP MG m m w x MK 4 w [a W hww Oct. 4, 1932. c. CHRISTIANSEN WORK FEEDMECHANISM Y s r y ma e a E wfi w n g r .1 Q m w w wv I a m i. 1 NM P INw 3 N. v 0

Fied July ll, 1930 Patented Oct. 4, 1932 UNITED STATES PATENT oFFicaCHRISTIAN GHRISTIANSEN', OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR TOROTARY MACHINE COMPANY, OF LYNN, MASSACHUSETTS, A CORPORATION OFMASSACHU- SETTS WORK FEED MECHANISM Application filed July 11,

This invention relates to mechanism for feeding work and is particularlyadapted for use with machines for applying adhesive tape to the sideportions of shoe uppers and similar machines.

It has been common practice heretofore to provide in machines of thistype a work feed mechanism including positively driven upper andlower'feed rolls between which the work is moved. In handling work inmachines of this type it is often necessary to turn the work as it isbeing fed through the machine, particularly when applying tape to theedges of the side portions of shoe uppers. Not only has this beendiiiicult to accomplish but often has caused the formation of wrinkleson the work.

It is an object of the present invention to overcome these difficultiesand provide work feed mechanism adaptable for machines of this generaltype which facilitates turning of the work as it passes through themachine.

In accordance with the invention, I pro vide a work feed mechanism whichavoidsimposing a constant pressure upon the work, as is the case withcooperating work feed rolls, and which utilizes a single feed roll withwhich cooperates a plurality of work feed feet which are movedsuccessively to engage and feed the work between the same and the roll.

The invention will be more clearly understood from the followingdescription in conjunction with the accompanying drawings; in which,

Fig. 1 is a front elevational view of a machine embodying the invention;

Fig. 2 is a side elevational view of the machine.

Fig. 3 is a side elevational view of the same partly in section, takenat the opposite side of the machine with part of the casing removed toshow the operating mechanism.

Fig. 4 is an enlarged side elevational view, partly in section, of aportion of the machine with the work feed mechanism in operativeposition.

Fig. 5 is a similar view with the work feed mechanism in inoperativeposition.

Figs. 6, 7 and 8 are detailed sectional views 1930. Serial No. 467,324.

showing the relationship of the various parts of the feed mechanism atdifi'erent periods during its cycle of operation.

Fig. 9 is a sectional elevational view taken upon the line 9-9 of Fig.2; and

Fig. 10 is a plan view of a specimen of work such as a shoe upper havingadhesive tape applied to its edges by the machine illustrated.

Before explaining in detail the present invention, it is to beunderstood that the inven-- tion is not limited in its application tothe details of construction and arrangement of parts illustrated in theaccompanying drawings, since the invention is capable of otherembodiments and of being practiced or carried out in various ways. Alsoit is to be understood that the phrascology or terminology employedherein is for the purpose of description and not of limitation, and itis not intended to limit the invention beyond the terms of the severalclaims hereto appended as considered in view of the prior art and therequirements thereof. 7

The machine illustrated in the drawings comprises a base 10 upon whichaframe 11 1s secured in any suitable manner, as by screws 12. This frameis chambered to provide a casing adapted to be closed by a cover plate(not shown) and is provided with upper and lower forwardly extendingarms 11a and 11b. Shafts 13 and 14c are mounted for rotation in suitablebearings in the frame 11 and also in hubs (not shown) formed as a partof a bracket plate 20. An upper feed roll 15 is mounted upon the outerend of the shaft 14 for rotation therewith. A gear 16 is fixed in anysuitable manner to a hub (not shown) secured upon the shaft 14. Thebracket 20 is also provided with a hub within which is journalled adrive shaft 26. The shaft 26 has a pinion 27 fixed upon its inner endand a wheel 28 fixedvupon its opposite end and connected with a suitablesource of power as by a belt 23. The bracket 20 also has a hub (notshown) within which is journalled a stud shaft 35, the latter carrying agear 37 meshing with the pinion 27 carried by the shaft 26. A pinion 38is also mounted upon the shaft and meshes with lever 81 engaging a alarge gear 42 secured to the shaft 13. The gear 42 is at all times inmesh with the gear 16 of similar diameter, carried by the upper shaft14.

Mounted within the frame arm 11?) is a rock shaft 44. Upon the rear endof this rock shaft is mounted a collar 45a of a depending arm 45 heldupon the shaft, as by set screws 46 engaging a slabbed 01f portion 44aof the rock shaft.

An arm 50 is secured to the front end of the shaft 44 and is inwardlyofiset at its free end to form a crank provided with a hub 51. Connectedto the shaft 13 by a universal connection 13a is a shaft 52 mounted inbear.- ings in the hub 51. A casing 53 having spaced parallel walls 54and 55 surrounds the outer end of the shaft 52 and is suitably clampedupon the hub 51. For this purpose, the lower end of the wall 55 isprovided with a split bearing 56 which is clamped upon the hub 51, as bya screw 57. A plurality of movable members 58 and 59 are positionedbetween the walls 54 and 55 of the casing 53 and each is provided at itsouter end with a feed foot 60. adapted to engage work W and move it withthe feed roll 15. Eccentrics 61 and 62 are adjacently mounted on theshaft 52 with their longest radii angularly disposed and adapted to bereceived in bearings 63 and 64 near the inner ends of the members 58 and59 respectively. Guide pins 65 and 66 rotatably carry the members 58 and59 respectively and are provided with heads 67 and 68 adapted to bereceived in guide slots 70 and 71 in the walls 54 and 55. A work guide72 is pivotally mounted near one end of thecasing 53 on a pin 74 mountedin the wall 55 and is provided at its other end with a handle 75. Thework guide 72 is held in its operative position by a spring 76, one endof which engages a socket 77 in the guide 72 and the other end of whichrests upona shoulder 78 on the wall 55. e

Mounted upon a fixed stud 80 is a lever 81, the free end of which isconnected to a treadle rod 82 operated from a suitable floor treadle.The lever 81 is connected intermediate its ends to the arm 45 by aspring 83. The lower part of the arm 45 is wedge-shaped and normallyrests against a cam 81a formed on the inner face of the lever-81. Whenthe le ver 81 and the arm 45 are in normal pisitions, as shown in fulllines'in Fig. 3, the arm is locked against movement by virtue of theabutting face of the cam 81a. Upon depress ing the treadle rod 82, thelever 81 will be swung downwardly toward the dated line position and thespring 83 will act to swing the arm 45 toward the dotted line position,the lower end of the arm travelling on the cam face 81a. Upon releasingthe treadle the parts will return to the full line positions by theaction of the spring, the upper edge of the stop shoulder 455 on thetape 87 which is wound thereon. Rotation of the reel of tape 87' uponthe stud 86 is resisted by a spring tension device 88 in the form of aspider having spring arms engaging the face of the tape holder orreel.

' "A bracket 90 is adjustably mounted upon the arm 11a adjacent the roll15 andfor this purpose is provided with a split bearing 91 which isclamped upon the arm 1142, as by screws 92. Shafts 93 and 94 arerotatably' mounted in suitable bearings in the bracket 90 and areprovided with paddle wheels 95, 96 respectively having radiallyextending blades 97. Suitable intermeshing gears 98,

99 are mounted upon the shafts 93, 94 respectively. A shaft 100 is alsomounted for rotation in suitable bearings in the bracket 90 and isprovided with a suitable gear 101 and a pinion 102 adapted to meshrespectively with the gear 98 and the gear 16. The paddle wheels 95, 96are so arrangedthat the tape may pass therebetween with the plates 97thereon alternately engaging and feeding relatively small spaced areasof the tape.

A tape guide is mounted in a slot 105 in the bracket 90 and comprisesrelatively adjustable members 106,107 having offset fingers 108 and 109depending therefrom. The member 107 is secured in fixed position withinthe slot 105 by a set screw 110 engaging a threaded opening in thebracket 90 and eX- tending into the slot 105. An adjusting screw 111 isswivelled in an ear 112 upon one end of the member 107 and may be turnedin order to space the guides different distances apart to accommodatedifferent widths of tape.

When the machine is in operation, tape is fed from the reel 87a betweenthe paddle blades 97 and is guided by the work guides 106,107 ontotheworkWwhich passes between the roll 15 and the feed feet 60 which arebrought successively into engagement with the work W to feed the samewith the roll 15. The feed feet 60 on the ends of the members 58 and 59are caused to move alternately into engagement with the work by theaction of the eccentrics 61 and 62 as the shaft 52 is rotated. As theshaft 52 rotates causing the eccentrics 61 and 62 to move the members 58and 59, the latter are guided in a plane passing substantially throughthe eccentric carrying shaft 52 and the center of the roll 15 byengagement of the heads 67 and 68 in the guide slots 7 O and 71. Duringthis movement of the members 58 and 59 they are permitted to pivot aboutthe pivot pins 65 and 66, thus causing the eccentrics to move laterallywith the rotation of the roll 15. It will be understood that while thefeed feet 60 do not exert a constant pressure upon the workthey bringabout a substantially continuous step by step feed of the work and atthe same time permit the work to be turned in any desired curved path.

I claim:

1. Work feed mechanism comprising a rotatable feed roll, a plurality offeed feet mounted for movement in a plane common to said roll, and meansfor actuating said feet successively to cause the same to cooperate withsaid roll to move work therebetween.

2. lVork feed mechanism comprising a rotatable feed roll, a plurality ofmovable members each having a feed foot at one end, means for movingsaid members to cause said feet to move longitudinally and laterally ina plane common to said roll, said members operating successively to feedwork between the same and said roll.

3. Work feed mechanism comprising a rotatable feed roll, a plurality ofmovable feed feet adapted for engagement with said roll, and means formoving said feet successively in an arcuate path to feed work betweenthe same and said roll.

4. Work feed mechanism comprising a rotatable feed roll, a plurality ofmovable mem bers each having a feed foot at one end, driving meansoperatively connected with each of said members to move said feetsuccessively towards and away from said roll, and means for guiding saidmembers to control their movement towards and away from said roll whilepermitting the same to pivot about a point located in a plane passingthrough said driving means and the center of said roll.

5. Work feed mechanism comprising a rotatable feed roll, a rotatableshaft, a plurality of eccentrics adiacentlv mounted on said shaft sothat their longest radii are angularly disposed, a plurality of movablemembers each having. a feed foot adapted for engagement with said roll,each of said members being provided with a bearing adapted to receiveone of said eccentrics, and guide means for said members operative alonga plane passing substantially through the center of said roll and saidshaft while permitting said members to pivot about a point in saidplane.

6. Work feed mechanism comprising a rotatable feed roll, a rotatableshaft, a plurality of eccentrics adjacently mounted on said shaft sothat their longest radii are angularly, disposed, a plurality of movablemembers separately actuated by said eccentrics and each having a feedfoot at one end adapted for engagement with said roll, a guide pinrotatably mounting each of said members, and aseparate guide for each ofsaid pins adapted to guide the same towards and away from said roll.

7. Work feed mechanism comprising a rotatable feed roll, a plurality offeed feet mounted for movement in a plane common to said roll, means foractuating said feet successively to cause the same to cooperate withsaid roll tomove work therebetween, and means permitting said feet to bemoved simultaneously towards and away from said roll.

8. Work feed mechanism comprising a rotatable feed roll, a supportmovable towards and away from said roll, a plurality of members movablewith and relative to said support, each of said members having a feedfoot at one end, driving means operatively connected with each of saidmembers to move said feed successively relative to said support towardsand away from said roll, and means for guiding said members to causesaid feed to move towards, with and awayfrom said roll when actuated bysaid driving means.

9. Work feed mechanism comprising a ro tatable feed roll, a supportmovable towards and away from said roll, a plurality of members movablewith and relative to said support, each of said members having a feedfoot at one end, driving means operatively connected with each of saidmembers to move said feet successively relative to said support towardsand away from said roll, means for guiding said members to cause saidfeet to move towards, with and away from said roll when actuated by saiddriving means, and a work guide carried by said support.

In testimony whereof I aflix my signature.

CHRISTIAN CHRISTIANSEN.

